import Vue from 'vue'
import Router from 'vue-router'

Vue.use(Router)

/* Layout */
import Layout from '@/layout'
// 引入多个模块的规则
import approvalsRouter from './modules/approvals'
import departmentsRouter from './modules/departments'
import employeesRouter from './modules/employees'
import permissionRouter from './modules/permission'
import attendancesRouter from './modules/attendances'
import salarysRouter from './modules/salarys'
import settingRouter from './modules/setting'
import socialRouter from './modules/social'

// 动态路由
export const asyncRoutes = [
  approvalsRouter,
  departmentsRouter,
  employeesRouter,
  permissionRouter,
  attendancesRouter,
  salarysRouter,
  settingRouter,
  socialRouter
]

/**
 * Note: sub-menu only appear when route children.length >= 1
 * Detail see: https://panjiachen.github.io/vue-element-admin-site/guide/essentials/router-and-nav.html
 *
 * hidden: true                   if set true, item will not show in the sidebar(default is false)
 * alwaysShow: true               if set true, will always show the root menu
 *                                if not set alwaysShow, when item has more than one children route,
 *                                it will becomes nested mode, otherwise not show the root menu
 * redirect: noRedirect           if set noRedirect will no redirect in the breadcrumb
 * name:'router-name'             the name is used by <keep-alive> (must set!!!)
 * meta : {
    roles: ['admin','editor']    control the page roles (you can set multiple roles)
    title: 'title'               the name show in sidebar and breadcrumb (recommend set)
    icon: 'svg-name'/'el-icon-x' the icon show in the sidebar
    breadcrumb: false            if set false, the item will hidden in breadcrumb(default is true)
    activeMenu: '/example/list'  if set path, the sidebar will highlight the path you set
  }
 */

/**
 * constantRoutes
 * a base page that does not have permission requirements
 * all roles can be accessed
 */
// 静态路由表
export const constantRoutes = [
  {
    path: '/login',
    component: () => import('@/views/login/index'),
    // 是否再左侧菜单展示
    hidden: true
  },
  {
    path: '/404',
    component: () => import('@/views/404'),
    hidden: true
  },
  // 二级路由展示到匹配到的一级路由组件的router-view里面去了
  {
    path: '/',
    component: Layout,
    redirect: '/dashboard',
    children: [
      {
        path: 'dashboard',
        name: 'dashboard',
        component: () => import('@/views/dashboard/index'),
        meta: { title: '首页', icon: 'dashboard' }
      },
      {
        path: 'import',
        component: () => import('@/views/import'),
        hidden: true
      }
    ]
  }
]

const createRouter = () =>
  new Router({
    // mode: 'history', // require service support
    scrollBehavior: () => ({ y: 0 }),
    // 只配置了静态路由
    routes: [
      ...constantRoutes // 静态路由
      // ...asyncRoutes
      // ...动态路由
    ]
  })

const router = createRouter()

// Detail see: https://github.com/vuejs/vue-router/issues/1234#issuecomment-357941465
export function resetRouter() {
  const newRouter = createRouter()
  router.matcher = newRouter.matcher // reset router
}

export default router

// 问题：如何理解动态路由和静态路由？
// 静态路由：所有人都可以访问的路由  包含：登录路由、首页路由、404
// 动态路由：有权限才可以访问的路由
// 如果你只是一个基层员工，我们是没有权限设置所有人的工资的，工资的这个路由分权限的，只有hr或者老板才拥有这个菜单的权限
// 工资路由就是一个动态路由

// 静态路由和动态路由概念：
// 问题：你之前做的项目。路由是怎么管理的？
// 1、我们项目分为了动态路由和静态路由
// 2、静态路由直接写死(所有人都可以访问)
// 3、动态路由权限，先进行权限判断，只有当前用户拥有这个动态路由权限的时候，我们才会把当前路由配置到路由表里
